Re: [Qemu-devel] [PATCH V9 9/9] pvpanic : update pvpanic document
>> Add mmio support info in docs/specs/pvpanic.txt. >> >> Signed-off-by: Peng Hao >> --- >> docs/specs/pvpanic.txt | 15 +-- >> 1 file changed, 13 insertions(+), 2 deletions(-) >> >> diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt >> index c7bbacc..67f5591 100644 >> --- a/docs/specs/pvpanic.txt >> +++ b/docs/specs/pvpanic.txt >> @@ -1,14 +1,18 @@ >> PVPANIC DEVICE >> == [...] >> +When pvpanic device is implemented as a ISA device, it supports IOPORT >> +mode. Since QEMU v3.2 pvpanic also supports MMIO mode, it will be > >The next qemu release will be 4.0, not 3.2. > I will change. >> +implemented as a SYSBUS device. > >Grammar suggestion: > >The pvpanic device can be implemented as an ISA device (using IOPORT), >or, since qemu 4.0, as a SYSBUS device (using MMIO). > It's fine. thanks. >> + >> ISA Interface >> - > >-- >Eric Blake, Principal Software Engineer >Red Hat, Inc. +1-919-301-3266 >Virtualization: qemu.org | libvirt.org
Re: [Qemu-devel] [PATCH V9 9/9] pvpanic : update pvpanic document
On 11/26/18 1:56 PM, Peng Hao wrote: Add mmio support info in docs/specs/pvpanic.txt. Signed-off-by: Peng Hao --- docs/specs/pvpanic.txt | 15 +-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt index c7bbacc..67f5591 100644 --- a/docs/specs/pvpanic.txt +++ b/docs/specs/pvpanic.txt @@ -1,14 +1,18 @@ PVPANIC DEVICE == -pvpanic device is a simulated ISA device, through which a guest panic -event is sent to qemu, and a QMP event is generated. This allows +pvpanic device is a simulated ISA/SysBus device, through which a guest +panic event is sent to qemu, and a QMP event is generated. This allows management apps (e.g. libvirt) to be notified and respond to the event. The management app has the option of waiting for GUEST_PANICKED events, and/or polling for guest-panicked RunState, to learn when the pvpanic device has fired a panic event. +When pvpanic device is implemented as a ISA device, it supports IOPORT +mode. Since QEMU v3.2 pvpanic also supports MMIO mode, it will be The next qemu release will be 4.0, not 3.2. +implemented as a SYSBUS device. Grammar suggestion: The pvpanic device can be implemented as an ISA device (using IOPORT), or, since qemu 4.0, as a SYSBUS device (using MMIO). + ISA Interface - @@ -19,6 +23,13 @@ Software should set only bits both itself and the device recognize. Currently, only bit 0 is recognized, setting it indicates a guest panic has happened. +SYSBUS Interface + + +The SYSBUS interface is similar to the ISA interface except that it uses +MMIO. For example, the arm virt machine could put the pvpanic device at +[0x907, 0x9070001] and currently only the first byte is used. + ACPI Interface -- -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
[Qemu-devel] [PATCH V9 9/9] pvpanic : update pvpanic document
Add mmio support info in docs/specs/pvpanic.txt. Signed-off-by: Peng Hao --- docs/specs/pvpanic.txt | 15 +-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt index c7bbacc..67f5591 100644 --- a/docs/specs/pvpanic.txt +++ b/docs/specs/pvpanic.txt @@ -1,14 +1,18 @@ PVPANIC DEVICE == -pvpanic device is a simulated ISA device, through which a guest panic -event is sent to qemu, and a QMP event is generated. This allows +pvpanic device is a simulated ISA/SysBus device, through which a guest +panic event is sent to qemu, and a QMP event is generated. This allows management apps (e.g. libvirt) to be notified and respond to the event. The management app has the option of waiting for GUEST_PANICKED events, and/or polling for guest-panicked RunState, to learn when the pvpanic device has fired a panic event. +When pvpanic device is implemented as a ISA device, it supports IOPORT +mode. Since QEMU v3.2 pvpanic also supports MMIO mode, it will be +implemented as a SYSBUS device. + ISA Interface - @@ -19,6 +23,13 @@ Software should set only bits both itself and the device recognize. Currently, only bit 0 is recognized, setting it indicates a guest panic has happened. +SYSBUS Interface + + +The SYSBUS interface is similar to the ISA interface except that it uses +MMIO. For example, the arm virt machine could put the pvpanic device at +[0x907, 0x9070001] and currently only the first byte is used. + ACPI Interface -- -- 1.8.3.1
